Stocks ended mixed in New York, with blue-chip shares rising and technology stocks coming under selling pressure for the second straight day as investors locked in profits.
Amazon.Com plummeted 19 per cent after an influential analyst warned of risks facing the online retailer.
At the close on Wall Street, the Dow Jones Industrial Average finished up 28.63 at 10,404.75. For the week, Wall Street's best-known indicator slipped 44.55.
The Standard and Poor's 500 index was down 10.64 at 1,441.54, while the technology-laden Nasdaq composite index fell 91.45 points to 3,845.39.